Construction of boilers.



W. H. RIGKER. CONSTRUCTION OF BOILERS. APPLICATION FILED APR. 13, 1910Patented Feb. 14,1911.

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Patented Feb. 14, 1911.

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. W. H. RIOKBR.

CONSTRUCTION OF BOILERS.

.APPLIOATION FILED APR. 13, 1910.

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W. H. RIGKER.

CONSTRUCTION OF BOILERS.

APPLICATION rum) APR. 13, 1910.

984,300. Patented Feb. 14,1911.

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UNITED STATES WILLIAM H. RICKER, OF CAMBRIDGE, MASSACHUSETTS.

CONSTRUCTION OF BOILERS.

Specification of Letters Patent.

Application filed April 13, 1910.

Patented Feb. 14, 1911. Serial No. 555,196.

To all whom it may concern:

Be it known that I, lVILLLmr H. Brenna, a citizen of the United Statesof America, and a resident of Cambrid e, in the county of Middlesex andState of Massachusetts, have invented certain new and usefulImprovements in the Construction of Boilers, of which the following is aspecification.

This invention relates to steam boilers and has for its object theproduction of a boiler in which the tubes are made with double wallsleaving an annular space through which the water circulates, said waterbeing subjected to heat caused by the products of combustion passingthrough the interior of said tube and around the exterior thereof.

The invention consists in a novel construction of vertical standpipes towhich the various tubes are connected, said vertical standpipes beingmade up of a plurality of sections locked together by some suitablemeans, each of which sections communicates with the annular passage inone of said tubes while a central passage is provided through which theproducts of combustion are free to pass.

The invention further consists in certain novel features of constructionand arrangement of parts which will be readily understood by referenceto the description of the drawings and to the claims hereinafter given.

Of the drawings: Figure 1 represents a boiler embodying the features ofthe present invention. Fig. 2 represents a front elevation, shown partlyin section, of a plurality of vertical standpipes. and the horizontalpipe communicating with the upper ends of said standpipes. Fig. 3represents an elevation partly in section of one of said standpipesshowing a plurality of tubes communicating therewith, the cutting planebeing on line 3 3 on Fig. 2. Fig. ti: represents a hor izontal sectionthrough the same, the cutting plane being on line l-l: on Fig. 2. Fig. 5represents an enlarged sectional detail of one of the tubes and itsconnecting member forming one of the sections of the vertical standpipe,the cutting plane on line 55 on Fig. 4, and Fig. 6 represents anenlarged section through one of the tubes, the cutting plane being online 6-6 on Fig. 4c.

Similar characters designate like parts throughout the several figuresof the drawings.

In the drawings, 10 pit of a boiler above which is located the usualgrate 11. Access to the fire-pot 12 is provided through the fire door13. Above the fire-pot 12 are located a plurality of double-walled tubes14, the opposite ends of which are connected in a novel manner to thestandpipes l5 and 16, respectively, at the front and rear ends of theboiler.

The vertical standpipe 16 communicates with a chamber 1'? in the rear ofthe boiler connected by a pipe 18 to the annular passage 19 formedbetween the cylinder 20 and the inner tubular member 21 concentricallylocated therein, the ends of the passage 19 being closed by the annularmembers 22 interposed between said members 20 and 21 as clearlyindicated in Fig. 1 of the drawings.

The passage 19 is connected at its opposite end by means of a pipe 23with an inlet pipe 24. All of the front standpipes l5 connect with ahorizontal pipe 25 from which extends a pipe 26 communicating with asteam drum 27. The products of combustion pass upwardly from thefire-pot in the direction of the arrows on Fig. 1 and through the pipe21 and around and along the outer surface of the pipe 20. The productsof combustion passing through the pipe 21 are forced by means of theaspirator 28 through the pipe 29 into the reservoir where any soot orunconsumed matter is collected, the gas itself passing outward from saidreservoir through the pipe 31.

The vertical standpipes 15 are composed of a plurality of T-shapedmembers 32 each member having a lateral branch 83, one wall of which isthreaded to receive the end of a pipe 34 forming one wall of a tube 14:while a smaller. longer pipe concentrically disposed within the pipe 34is reamed or otherwise fitted to the opposite wall 36 of said branch 33.as indicated clearly in Fig. 4: of the drawings. These pipes 34: and 3 5thus centrally disposed relative to each other form an annular passage37 communicating at either end with the passage 38 within the T-shapedmember, said passage 38 in turn communicating with the vertical passage39 extending therethrough. Each end of the pipe 35 is open and theproducts of combustion passing from the fire-pot 12 are free to passthrough the interior of this pipe and also around the exterior surfaceof the pipe 3 1. By this means the water circulatrepresents the ashingthrough the passage 37 is subjected to a greatly increased heatingsurface, which obviously is of a great advantage.

The upper ends of the Vertical standpipes are connected to thehorizontal pipe 25, as indicated clearly in i 2 of the drawings.lletween the branch oi the pipe and the end of the 't shaped member 33is a ring 4-1 having both ends tapered to fit ,within the ends of thebranch it) and the T- shaped member Similar rings are interposed betweenthe various 'l shaped members 32 while the end opposite to thehorizontal pipe is provided with header l 9.

it rod t3 extends centrally through the various rings 4:1, members 32,header through a wall oi the pipe 25, threaded to cit-her end of saidrod serving a means (till locking all the Various lions together tosecure a tight joint.

The rear vertical standpipe ll; is similarly constructed and connectedto the horizontal chamber 17. The ln'anches ot each of the T-shapedmembers are so constructed relative to the vertical portions of saidmembers that the inner pipe 35 of each tube ma be withd awn withoutdisconnectin; the sec tions from the ort r pipe member 3n.

Qecurcd to the ,v pcd members by means oi bo ts to are a plurality of:removable plates 46 at the front; and rear oi? the boiler by removingwhich access may be readily obtained to any particular stack oi tubesfor the purpose of withdrawing an in i and nuts ell l l l l l l l nerpipe member 35 and replacing it when desired.

The advantages of con tructing a boiler in this manner whereby theheating surface of the Various tubes doubled is Very apparent and it isbelieved that in ties of this the invention will be thoroughlyunderstood without "further description.

Having thus described my invention, I claim:

1. In an apparatus of the class described, the combination of twostandpipes each composed ot' a pluralit 0t l membcrs .ovided withlateral branches each of less depth than the bod portion of saidmembers; a pipe extending through and connecting two of said brai'iches;and a sccmnl pipe surrounding the tirstanentioned pipe and alsoconnected to said branches ann forming an annular passage communicatingwith the iuterior oi. both standpipes.

in an ap iarz tus ot the class described, the con'ibiinition of twostandpipes each composed of a plurality oit T-mcmbers provided withlateral branches a rod passing; through said T-inenibers; means thereonfor locking; said members together; a pipe extending; through and(JOllllQtjlllllf two of said branches; and a second pipe surrouinlinp;the first-mentioned pipe and also connected to said branches and formingan ani'iular pasl l l 1 1 l sage communicating with the interior of bothstandpipes.

3. in an apparatus of the class described, the combination of twostandpipes each composed of a plurality of T-members provided withlateral branches extending alternately in opposite directions; means torlocking said members together; a pipe extending thr nigh and connectingtwo oi? said branches; and a second pipe surromuling thefirst-inentioned pipe and also :onnectcd to said branches and il'ormingan annular passage 'cnnnunicating with the interior of both stanc pipes.

4-. in an apparatus of the class described, the combination of twostandpipes each conn posed of a plurality oi: 'T-meinbers; a horizontalpipe communicating with the upper end ol one of said standpipes; anotherhorizontal pipe connnui'iicating with the lower end of the otherstandpipe; headers in the opposite ends of said standpipes; rods eX-tending through said standpipes, said headers, and horizontal pipes;means on said rods tor locking the various parts of: said standpipes,headers, and horizontal pipes together; and two pipes connecting aT-memoer of one standpipe with a T-member of the other whereby water maycirculate through the annular space between said two pipes from onestandpipe to the other.

5. In an apparatus oi the class described, a pl uralitzy 0t alinedstandpipes in two rows, etch having a plurality of latcra, branchesextending alternately in opposite directions; a pipe extending through abranch in each of said rows through which heat is adapted to pass: ashorter pipe surromnlingr said first-mentioned pipe and connected ateach end to a branch, thereby forming an annular commin'iicating passagebetween said standpipes tor the circulation ot a tluid; and a casing forsaid pipes having ren'iovable front and rear plates.

(3. in an apparatus of the class described, the combination of twostandpipes, each composcd of a plurality ot T-members each haw in o alateral branch, one wall of which is provided with a threaded opci ingand the op 'iosite wall of which provided with a smaller openingconcentric to said threaded opening; and a pipe threaded to the largeropenings of two opposed branches and another pipe extending through thelast-mentioned pipe with its ends positioned in said smaller openings.

7. In an apparatus of the class described, the combination of twostandpipes each provided with lateral cylindrical branches the ar s ofwhich are at one side of the axes of said vertical passages through saidstandpipes; a pipe extending through and connecting two of said benches;and a second pipe surrounding, the lirstenentioned pipe and alsoconnected to said branches and forming an annular passage communicatingwith the interior of both standpipes.

S. In an apparatus of the class described, the combination of astandpipe composed of a plurality of T-shaped members, the verticalbranches of Which have their inner Walls tapered; a tapered nippleinterposed between said T-shaped members and fitting said tapered Walls;a header at one end of 10 said standpipe; a horizontal pipe at theother; and means extending through the bore of said T-shaped members andsaid header and horizontal pipe for locking them all together.

Signed by me at 4: Post Oflice Sq., Mass, this 8th day of April, 1910.

VILLIAM H. RICKER. Witnesses VALTER E. LOMBARD, NATHAN C. LOMBARD.

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